Inner hole processing device for flowmeter production

Abstract

The invention belongs to the technical field of grinding equipment, and particularly relates to an inner hole processing device for flowmeter production, which comprises a base and a bearing seat fixedly arranged on the end face of the base, and further comprises a top pressing plate arranged above the bearing seat, an electric oil cylinder is mounted on the base, and a grinding wheel is mounted on the top pressing plate. The telescopic end of the electric oil cylinder is fixedly connected with the top pressing plate; and the multiple circular plates are arranged below the top pressing plate, the top pressing plate is provided with a driving mechanism, and the driving mechanism is used for driving the multiple circular plates to rotate synchronously. Relatively balanced grinding pressure can be applied to all positions of a measuring inner hole of the flowmeter as much as possible, the grinding efficiency can be ensured, motor overload and grinding piece damage caused by too large grinding pressure can be avoided as much as possible, grinding scraps can be automatically collected, meanwhile, an air source for collecting the scraps can be utilized, and the grinding efficiency is improved. And personnel are automatically reminded of grinding completion of the inner hole of the flowmeter and replacement of the corresponding grinding piece.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding equipment, and in particular relates to an inner hole processing device used in flow meter production. Background Art

[0002] Flowmeter plays a key role in flow measurement, and the surface quality of the inner hole of the flowmeter is crucial. Grinding can make the inner hole surface smoother, reduce the resistance and turbulence of the fluid flowing through, and ensure the stability of the fluid flow. This helps to improve the measurement sensitivity and accuracy of the flowmeter and make the measurement data more reliable.

[0003] At present, the flow meter is mainly composed of a detection body and a measuring pipe. The detection body is installed on the measuring pipe, and the measuring pipe is installed in the pipeline through which the fluid to be measured flows. When the fluid passes through the measuring pipe, the detection body measures the fluid flow rate. The measuring pipe is usually made of a seamless pipe. After the seamless pipe is cut, the inside of the seamless pipe needs to be polished to ensure the accuracy of the inner diameter of the seamless pipe and the smoothness of the surface, such as the inner hole processing device for flow meter production disclosed in patent publication number CN215317513U; Since the roughness of each position of the flowmeter's detection inner hole is different, the sizes of protrusions, burrs, etc. are also different. For positions with larger protrusions, burrs, etc., the distance between the protrusions, burrs and the polishing part is smaller, resulting in a greater grinding resistance for the polishing part during polishing. For positions with smaller protrusions, burrs, etc., since the distance between the protrusions, burrs and the polishing part surface is larger and the contact is looser, the polishing part is subjected to a smaller grinding resistance during polishing. If the grinding resistance and polishing pressure are too large, the motor (used to drive the polishing part) may be overloaded and the polishing part may be damaged. If the grinding resistance and polishing pressure are too small, the removal efficiency of protrusions, burrs, etc. will be affected, and the use effect will be poor. Summary of the invention

[0004] The object of the present invention is to provide an inner hole processing device for flow meter production in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solution: an inner hole processing device for flow meter production, comprising a base and a bearing seat fixedly arranged on the end surface of the base, and also comprising: A top pressure plate is arranged above the bearing seat, the base is equipped with an electric cylinder, and the telescopic end of the electric cylinder is fixedly connected to the top pressure plate; A plurality of circular plates are arranged below the top pressure plate, the top pressure plate is equipped with a driving mechanism, and the driving mechanism is used to drive the plurality of circular plates to rotate synchronously; A plurality of detection units are respectively installed on the corresponding side walls of the circular plate; A plurality of grinding units are respectively mounted on the corresponding side walls of the circular plate, a controller is mounted on the end surface of the base, and the detection unit is electrically connected to the corresponding grinding unit through the controller; A chip removal unit is installed at the bottom of the support base, and the chip removal unit is electrically connected to the controller; The replacement prompt unit is arranged above the base, and the replacement prompt unit is communicated with the air outlet end of the chip removal unit. The replacement prompt unit is electrically connected with each detection unit through a controller.

[0006] Preferably, each of the detection units includes a plurality of insulating sleeves detachably mounted on the side wall of the circular plate, the inner wall of each of the insulating sleeves is slidably connected with a sliding rod, and a strip groove plate is fixedly mounted on the end of the sliding rod away from the circular plate, and a positioning rod is rotatably provided inside the strip groove plate, and an end of each of the sliding rods away from the strip groove plate on the same side is fixedly connected with an insulating block, and a supporting spring is fixedly provided between the insulating block and the inner wall of the insulating sleeve, a movable conductive ring is fixedly sleeved on the outer wall of the insulating block, a resistance sleeve is fixedly mounted on the inner wall of the insulating sleeve, and the movable conductive ring is in sliding contact with the inner wall of the resistance sleeve.

[0007] Preferably, each of the grinding units includes a magnetic isolation cylinder fixedly inserted into the side wall of the circular plate, the cylinder end of the magnetic isolation cylinder is slidably connected with a non-magnetic rod, and the end of the non-magnetic rod away from the magnetic isolation cylinder on the same side is fixedly connected with an arc plate, and each of the arc plates away from the non-magnetic rod on the same side is equipped with a detachable grinding sand sheet at one end, the non-magnetic rod away from the arc plate on the same side is fixedly equipped with a permanent magnet, and a non-magnetic spring is fixedly provided between the permanent magnet and the inner wall of the magnetic isolation cylinder, an electromagnet is fixedly installed on the inner cylinder bottom of the magnetic isolation cylinder, and the movable conductive ring and the resistance sleeve are electrically connected to the corresponding electromagnet through a controller.

[0008] Preferably, the chip removal unit includes a collecting box fixedly mounted on the bottom of the supporting seat, the collecting box and the end surface of the supporting seat are jointly provided with a collecting hole, a filter is fixedly mounted on the inner side of the collecting box away from the collecting hole, a mounting box is fixedly mounted on the bottom of the supporting seat, and an air pump is fixedly mounted inside the mounting box, a suction pipe connected to the collecting box is mounted on the suction end of the air pump, an output pipe is fixedly mounted on the output end of the air pump, the air pump is electrically connected to a controller, and a plurality of air inlet holes are formed on the end surface of the top pressure plate.

[0009] Preferably, the replacement reminder unit includes a ventilation plate fixedly mounted on the bottom of the collection box, grooves are provided at both ends of the ventilation plate, and a plurality of ventilation holes are provided at the bottom of the two grooves, a circular ring is fixedly mounted inside each ventilation hole, and a pressure switch is fixedly mounted at a position on one side of each ventilation hole, a wind shield block is fixedly mounted on the moving contact of each pressure switch, and the side wall of the wind shield block abuts against the corresponding side wall of the circular ring, the diameter of each wind shield block is larger than the inner diameter of the circular ring, a plurality of normally closed electromagnetic switches are fixedly mounted on the outer wall of the ventilation plate, an exhaust assembly connected to each ventilation hole is installed on the side wall of the ventilation plate, the output pipe is connected to each ventilation hole through the groove on the same side, each pressure switch is electrically connected to the timing module of the controller, and each normally closed electromagnetic switch is electrically connected to the corresponding movable conductive ring and resistance sleeve through the controller.

[0010] Preferably, the exhaust assembly includes a plurality of exhaust pipes fixedly inserted at the bottom of the ventilation plate, and each exhaust pipe is connected to a corresponding ventilation hole, each exhaust pipe is arranged on a side of the same side ring away from the pressure switch, a sealing cover is fixedly installed at the bottom of the ventilation plate, and the sealing cover is connected to each exhaust pipe, each exhaust pipe is installed with a normally open solenoid valve, each ventilation hole is installed with a normally closed solenoid valve at a position located between the exhaust pipe on the same side and the ring on the same side, and each normally closed solenoid switch is electrically connected to the corresponding normally open solenoid valve and normally closed solenoid valve through a controller.

[0011] Preferably, an air outlet is provided on a side wall of the sealing cover, and an air pressure switch is fixedly mounted on an inner wall of the sealing cover, and the air pressure switch is electrically connected to the controller.

[0012] Preferably, the driving mechanism includes a driving rod rotatably arranged at the lower end of the top pressure plate, and each circular plate is fixedly plugged with the driving rod, a driving motor is fixedly installed on the top of the top pressure plate, and the output end of the driving motor is transmission-connected to the driving rod, and the driving motor is electrically connected to the controller.

[0013] Compared with the existing technology, the advantages of an inner hole processing device for flow meter production are: 1. Through the mutual cooperation of the provided base, bearing seat, top pressure plate, electric cylinder, circular plate, driving mechanism, detection unit, grinding unit and controller, during the grinding process, each position of the hole wall of the flow meter measuring inner hole is monitored in real time, and based on the monitoring results, the grinding pressure applied to each position of the measuring inner hole is automatically adjusted, so as to keep a relatively balanced grinding pressure on each position of the measuring inner hole as much as possible, which can not only ensure the grinding efficiency, but also avoid excessive grinding pressure to cause motor overload and damage to the grinding parts.

[0014] 2. By setting up the chip removal unit, the chips generated by grinding can be quickly collected during the grinding process. On the one hand, it can improve the convenience of debris cleaning, and on the other hand, it can reduce the impact of the debris generated by grinding on the grinding effect.

[0015] 3. Through the replacement reminder unit, the time when each grinding part needs to be replaced can be automatically measured based on the grinding time of each grinding unit and the size of protrusions, burrs, etc., so that personnel can control the time required for timely replacement of grinding parts. Secondly, in conjunction with the set air outlet and air pressure switch, it can automatically remind personnel that the inner hole grinding of the flow meter is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an inner hole processing device for flow meter production provided by the present invention; Figure 2 It is a schematic cross-sectional structural diagram of a circular plate of an inner hole processing device for flow meter production provided by the present invention; Figure 3 It is a schematic diagram of the internal structure of a circular plate of an inner hole processing device for flow meter production provided by the present invention in a side view; Figure 4 The present invention provides an inner hole processing device for flow meter production. Figure 3 A magnified view of the structure of part A; Figure 5 It is a schematic diagram of the internal structure of a collection box of an inner hole processing device for flow meter production provided by the present invention; Figure 6 The present invention provides an inner hole processing device for flow meter production. Figure 5 A magnified view of the structure of part B.

[0017] In the figure: 1 base, 2 bearing seat, 3 top pressure plate, 4 electric cylinder, 5 round plate, 6 driving mechanism, 61 driving rod, 62 driving motor, 7 detection unit, 71 insulating sleeve, 72 sliding rod, 73 strip groove plate, 74 positioning rod, 75 insulating block, 76 supporting spring, 77 movable conductive ring, 78 resistance sleeve, 8 grinding unit, 81 magnetic isolation cylinder, 82 non-magnetic rod, 83 arc plate, 84 grinding sand sheet, 85 permanent magnet, 86 non-magnetic spring, 87 electromagnet, 9 controller, 10 chip removal unit , 101 collecting box, 102 collecting hole, 103 filter, 104 installation box, 105 air pump, 106 suction pipe, 107 output pipe, 108 air inlet, 11 replacement reminder unit, 111 ventilation plate, 112 groove, 113 ventilation hole, 114 ring, 115 pressure switch, 116 wind shield, 117 normally closed solenoid switch, 118 exhaust assembly, 12 exhaust pipe, 13 sealing cover, 14 normally open solenoid valve, 15 normally closed solenoid valve, 16 air outlet, 17 air pressure switch. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figure 1-Figure 6 As shown, an inner hole processing device for flow meter production includes a base 1 and a bearing seat 2 fixedly arranged on the end face of the base 1, and also includes: a top pressure plate 3, the top pressure plate 3 is arranged above the bearing seat 2, the base 1 is equipped with an electric cylinder 4, and the telescopic end of the electric cylinder 4 is fixedly connected to the top pressure plate 3; a plurality of circular plates 5 are arranged below the top pressure plate 3, the top pressure plate 3 is equipped with a driving mechanism 6, and the driving mechanism 6 is used to drive the plurality of circular plates 5 to rotate synchronously, the driving mechanism 6 includes a driving rod 61 rotatably arranged at the lower end of the top pressure plate 3, and each circular plate 5 is fixedly plugged with the driving rod 61, a driving motor 62 is fixedly installed on the top of the top pressure plate 3, and the output end of the driving motor 62 is transmission-connected to the driving rod 61, the driving motor 62 is electrically connected to the controller 9, and the driving motor 62 works to rotate the driving rod 61, so that the circular plate 5 rotates.

[0020] A plurality of detection units 7 are respectively mounted on the corresponding side walls of the circular plate 5, and each detection unit 7 includes a plurality of insulating sleeves 71 detachably mounted on the side walls of the circular plate 5, and the inner walls of each insulating sleeve 71 are slidably connected with a slide rod 72, and a strip groove plate 73 is fixedly mounted on the end of the slide rod 72 away from the circular plate 5, and a positioning rod 74 is provided for internal rotation of the strip groove plate 73, and an insulating block 75 is fixedly connected to the end of each slide rod 72 away from the strip groove plate 73 on the same side, and a supporting spring 76 is fixedly provided between the insulating block 75 and the inner wall of the insulating sleeve 71, and a movable conductive ring 77 is fixedly sleeved on the outer wall of the insulating block 75, and a resistor sleeve 78 is fixedly mounted on the inner wall of the insulating sleeve 71, and the movable conductive ring 77 is in sliding contact with the inner wall of the resistor sleeve 78, and when the contact position of the movable conductive ring 77 and the resistor sleeve 78 changes, the size of the resistance passed into the corresponding connection circuit will also change synchronously.

[0021] A plurality of grinding units 8 are respectively installed on the side walls of the corresponding circular plate 5, a controller 9 is installed on the end surface of the base 1, and the detection unit 7 is electrically connected to the corresponding grinding unit 8 through the controller 9. Each grinding unit 8 includes a magnetic isolation cylinder 81 fixedly plugged into the side wall of the circular plate 5, and a non-magnetic rod 82 is slidably connected to the cylinder end of the magnetic isolation cylinder 81, and an arc plate 83 is fixedly connected to the end of the non-magnetic rod 82 away from the same side magnetic isolation cylinder 81, and each arc plate 83 is installed at one end away from the same side non-magnetic rod 82. There is a detachable grinding sand sheet 84, a permanent magnet 85 is fixedly installed on the end of the non-magnetic rod 82 away from the arc plate 83 on the same side, and a non-magnetic spring 86 is fixedly provided between the permanent magnet 85 and the inner wall of the magnetic isolation tube 81, an electromagnet 87 is fixedly installed on the bottom of the inner tube of the magnetic isolation tube 81, and the movable conductive ring 77 and the resistance sleeve 78 are electrically connected to the corresponding electromagnet 87 through the controller 9. The grinding sand sheet 84 can be removed from the arc plate 83, so that the grinding sand sheet 84 can be easily replaced.

[0022] The chip removal unit 10 is installed at the bottom of the supporting seat 2, and the chip removal unit 10 is electrically connected to the controller 9. The chip removal unit 10 includes a collecting box 101 fixedly installed at the bottom of the supporting seat 2, and the collecting box 101 and the end face of the supporting seat 2 are jointly provided with a collecting hole 102, and a filter screen 103 is fixedly installed on the side of the collecting box 101 away from the collecting hole 102, a mounting box 104 is fixedly installed at the bottom of the supporting seat 2, and an air pump 105 is fixedly installed inside the mounting box 104, a suction pipe 106 connected to the collecting box 101 is installed at the suction end of the air pump 105, and an output pipe 107 is fixedly installed at the output end of the air pump 105, and the air pump 105 is electrically connected to the controller 9, a plurality of air inlet holes 108 are opened on the end face of the top pressure plate 3, and the side wall of the collecting box 101 is provided with an opening, and a sealing cover is threadedly connected to the inner wall of the opening to facilitate the removal of waste chips inside the collecting box 101.

[0023] The replacement prompt unit 11 is arranged above the base 1, and the replacement prompt unit 11 is connected to the air outlet of the chip removal unit 10, and the replacement prompt unit 11 is electrically connected to each detection unit 7 through the controller 9, and the replacement prompt unit 11 includes a ventilation plate 111 fixedly installed at the bottom of the collection box 101, and grooves 112 are provided at both ends of the ventilation plate 111, and a plurality of ventilation holes 113 are provided at the bottom of the two grooves 112, and a ring 114 is fixedly installed inside each ventilation hole 113, and a pressure switch 115 is fixedly installed at a position on one side of each ventilation hole 113 on each ring 114, and a moving contact of each pressure switch 115 is fixedly installed with a wind shield 116, and the wind shield The side wall of 116 abuts against the corresponding side wall of the ring 114, the diameter of each wind shield block 116 is larger than the inner diameter of the ring 114, a plurality of normally closed electromagnetic switches 117 are fixedly installed on the outer wall of the ventilation plate 111, and the side wall of the ventilation plate 111 is installed with an exhaust assembly 118 connected to each ventilation hole 113, the output pipe 107 is connected to each ventilation hole 113 through the groove 112 on the same side, each pressure switch 115 is electrically connected to the timing module of the controller 9, and each normally closed electromagnetic switch 117 is electrically connected to the corresponding movable conductive ring 77 and the resistance sleeve 78 through the controller 9. After receiving the closing electrical signal of the pressure switch 115, the controller 9 will control the corresponding timing module to power on and start timing.

[0024] The exhaust assembly 118 includes a plurality of exhaust pipes 12 fixedly plugged into the bottom of the ventilation plate 111, and each exhaust pipe 12 is communicated with the corresponding ventilation hole 113, and each exhaust pipe 12 is arranged on the side of the same side circular ring 114 away from the pressure switch 115. A sealing cover 13 is fixedly installed at the bottom of the ventilation plate 111, and the sealing cover 13 is communicated with each exhaust pipe 12. A normally open solenoid valve 14 is installed inside each exhaust pipe 12, and a normally closed solenoid valve 15 is installed inside each ventilation hole 113 between the exhaust pipe 12 on the same side and the circular ring 114 on the same side. Each normally closed solenoid switch 117 is electrically connected to the corresponding normally open solenoid valve 14 and normally closed solenoid valve 15 through the controller 9. When the current passed through the normally closed solenoid switch 117 is not large enough, the moving contact of the normally closed solenoid switch 117 remains in a closed state, and when the current passed through is large enough, the moving contact of the normally closed solenoid switch 117 remains in an open state.

[0025] An air outlet 16 is provided on the side wall of the sealing cover 13, and an air pressure switch 17 is fixedly installed on the inner wall of the sealing cover 13. The air pressure switch 17 is electrically connected to the controller 9. Under the action of air pressure, the moving contact of the air pressure switch 17 will close under the action of air pressure, and after the air pressure disappears, the moving contact of the air pressure switch 17 will rebound and reset.

[0026] The operating principle of the present invention is now described as follows: the measuring tube of the flow meter is installed on the bearing seat 2 (the flange on the measuring tube is fixed to the threaded hole on the bearing seat 2 by bolts), and then the electric cylinder 4 is started by the controller 9 to make the electric cylinder 4 work regularly, so as to drive the top pressure plate 3 to move downward, and make the top pressure plate 3 press down and fix the measuring tube (when the electric cylinder 4 drives the top pressure plate 3 to move downward, it will drive each circular plate 5 to enter the inside of the measuring tube through the driving rod 61, and under the action of the blocking of the inner wall of the measuring tube, the positioning rod 74 will drive the sliding rod 72 to move a certain distance to the inside of the insulating sleeve 71 through the strip groove plate 73), and then the controller 9 can be started to grind the tube hole of the measuring tube; After the controller 9 is started, it controls the driving motor 62 to work, and the driving motor 62 drives each circular plate 5 to rotate through the driving rod 61. At this time, each positioning rod 74 rotates and moves along the inner wall of the measuring tube under the action of the supporting spring 76. At the same time, after the controller 9 is started, it controls the connection circuit of the movable conductive ring 77, the resistance sleeve 78 and the corresponding electromagnet 87 to be connected. During grinding, if the positioning rod 74 rotates to a position where the inner wall of the measuring tube has large convex particles and burrs, the positioning rod 74 is subjected to a large extrusion force. At this time, the positioning rod 74 The distance that the insulating block 75 moves downward by the slide bar 72 becomes larger, so that the movable conductive ring 77 is closer to the driving rod 61. At this time, the length of the resistor sleeve 78 connected to the connection loop between the movable conductive ring 77 and the electromagnet 87 becomes longer, so that the resistance of the connection loop between the resistor sleeve 78, the movable conductive ring 77 and the corresponding electromagnet 87 becomes larger, thereby reducing the current passing through the electromagnet 87, and further reducing the magnetic force generated by the electromagnet 87. Under the magnetic force of the electromagnet 87, the permanent magnet 85 will be subjected to magnetic repulsion. At this time, the non-magnetic rod 82 will pass The arc plate 83 makes the grinding sheet 84 contact with the inner wall of the measuring tube, and under the action of rotation, the grinding sheet 84 will grind the inner wall of the measuring tube. After the magnetic force of the electromagnet 87 becomes smaller, the grinding pressure applied by the grinding sheet 84 to the inner wall of the measuring tube through the permanent magnet 85, the non-magnetic rod 82 and the arc plate 83 will also become smaller. Therefore, at the position where the convex particles and burrs are larger, the grinding pressure of the grinding sheet 84 on the inner wall of the measuring tube will be synchronously reduced, reducing the load of the drive motor 62 and avoiding excessive wear of the grinding sheet 84 as much as possible. On the contrary, At the position where the bumps and burrs are smaller, the connection length between the resistor sleeve 78 and the movable conductive ring 77 and the electromagnet 87 becomes smaller. At this time, the current passing into the electromagnet 87 becomes larger, so the magnetic repulsion force exerted by the electromagnet 87 on the permanent magnet 85 becomes larger, thereby increasing the moving distance of the grinding sand sheet 84 in the direction away from the driving rod 61, and then enabling the permanent magnet 85 to overcome the larger supporting force of the non-magnetic spring 86, so that at the position where the bumps and burrs are smaller, the grinding pressure between the grinding sand sheet 84 and the bumps and burrs is increased, thereby ensuring the grinding efficiency; After the controller 9 is started, the controller 9 will synchronously start the air pump 105, and the suction end of the air pump 105 will suck the waste generated by grinding inside the measuring tube into the collecting box 101 through the suction pipe 106, the collecting box 101, and the collecting hole 102 (the collecting hole 102 is inside the measuring tube), and the waste is trapped in the collecting box 101 through the filter 103, so that the waste generated by grinding can be collected together; Secondly, after the controller 9 is started, it will synchronously connect the connection circuit of the movable conductive ring 77, the resistor sleeve 78 and the corresponding normally closed electromagnetic switch 117. At the position where the bumps and burrs are larger, the extrusion distance of the positioning rod 74 becomes larger, and the distance that the slide rod 72 moves into the insulating sleeve 71 becomes larger. Therefore, at this time, the length of the resistor sleeve 78 connected to the connection circuit of the movable conductive ring 77 and the normally closed electromagnetic switch 117 becomes longer, thereby making the resistance of the connection circuit of the resistor sleeve 78, the movable conductive ring 77 and the normally closed electromagnetic switch 117 larger. Therefore, at this time, the current passing into the normally closed electromagnetic switch 117 is small (less than 0.4A), and the moving contact of the normally closed electromagnetic switch 117 cannot be adsorbed. The moving contact of the closed electromagnetic switch 117 remains in a closed state. At this time, the normally closed electromagnetic valve 15 and the normally open electromagnetic valve 14 corresponding to the normally closed electromagnetic switch 117 are energized. At this time, the normally open electromagnetic valve 14 is energized to close, and the normally closed electromagnetic valve 15 is energized to open. Therefore, the air pump 105 inputs the air flow into the vent 113 through the output pipe 107 and the groove 112 on the same side and is discharged through the ring 114. Under the pressure of the air flow, the windshield block 116 on this side will press and close the moving contact of the pressure switch 115 on the same side. Therefore, the controller 9 will receive the continuous closing electrical signal of the pressure switch 115. As the bumps and burrs are polished, the current passing into the normally closed electromagnetic switch 117 gradually increases (greater than 0.4A), at this time, the current passed into the normally closed electromagnetic switch 117 is large enough to make the moving contact of the normally closed electromagnetic switch 117 adsorbed, so that the moving contact of the normally closed electromagnetic switch 117 is disconnected, and the normally closed electromagnetic valve 15 and the normally open electromagnetic valve 14 are powered off. At this time, the airflow entering the vent 113 will be discharged through the exhaust pipe 12. When the measuring tube is not polished, a grinding force will be generated between the measuring tube and the grinding sand sheet 84, which will cause wear on the grinding sand sheet 84. As the inner wall of the measuring tube is polished, the inner diameter of the measuring tube gradually increases. When the moving contact of the normally closed electromagnetic switch 117 is adsorbed, the closing electrical signal of the normally closed electromagnetic switch 117 disappears, indicating that the position of the measuring tube has been polished. At this time, the controller 9 will synchronously stop supplying power to the corresponding electromagnet 87, so the grinding sand sheet 84 will move back and reset under the action of the non-magnetic spring 86, so that the grinding sand sheet 84 Separated from the inner wall of the measuring tube, the grinding sand sheet 84 will not be worn. Therefore, before the grinding of the measuring tube is completed, the air flows out through the vent hole 113. After the grinding of the measuring tube is completed, the air flows out through the exhaust pipe 12. When the air flows out through the vent hole 113, since the controller 9 receives the closing electrical signal of the pressure switch 115, the controller 9 controls the corresponding timing module to start timing. After the closing electrical signal of the pressure switch 115 received by the controller 9 is disconnected, the corresponding timing module in the controller 9 stops timing. Therefore, the time used by the grinding sand sheet 84 can be synchronously measured based on the grinding time consumed by the grinding sand sheet 84. The personnel can check the grinding time of each grinding sand sheet 84 through the controller 9, and can replace the grinding sand sheet 84 in time to ensure that the grinding sand sheet 84 is fully used, and to avoid excessive use of the grinding sand sheet 84 affecting the grinding effect. The airflow discharged through the exhaust pipe 12 will enter the interior of the sealing cover 13, and at this time the airflow will be discharged through the air outlet 16. As each position inside the measuring tube is fully polished, the closing electrical signals of each normally closed electromagnetic switch 117 all disappear. At this time, the controller 9 controls each electromagnet 87 to cut off the power. At the same time, since the closing electrical signals of each normally closed electromagnetic switch 117 all disappear, the airflow output by the air pump 105 will be discharged into the interior of the sealing cover 13 through all the exhaust pipes 12. Since the aperture of the air outlet 16 is limited, the airflow discharged into the sealing cover 13 cannot be discharged in time, and the air pressure inside the sealing cover 13 will gradually increase. Under the action of the air pressure, the air pressure switch 1 The moving contact of 7 will be back-pressed and closed. After the controller 9 receives the closing electrical signal of the air pressure switch 17, it will control its own alarm module (such as a buzzer) to sound an alarm, thereby reminding the personnel that the grinding of the measuring tube is completed. At this time, the measuring tube can be removed. Among them, the sealing cover 13 collects air to close the moving contact of the air pressure switch 17, which can avoid the false triggering caused by the occasional simultaneous disconnection of the moving contacts of all normally closed electromagnetic switches 117 (for example, all the positioning rods 74 are just moved to the polished position. At this time, the moving contacts of all normally closed electromagnetic switches 117 will be disconnected, causing the controller 9 to make a wrong judgment), ensuring that the measuring tube is fully polished.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An inner hole processing device for flow meter production, comprising a base (1) and a bearing seat (2) fixedly arranged on the end surface of the base (1), characterized in that: Also includes: A top pressure plate (3) is arranged above the bearing seat (2); the base (1) is equipped with an electric cylinder (4), and the telescopic end of the electric cylinder (4) is fixedly connected to the top pressure plate (3); a plurality of circular plates (5) are arranged below the top pressure plate (3); the top pressure plate (3) is equipped with a driving mechanism (6), and the driving mechanism (6) is used to drive the plurality of circular plates (5) to rotate synchronously; a plurality of detection units (7) are respectively installed on the side walls of the corresponding circular plates (5); a plurality of grinding units (8) are respectively installed on the side walls of the corresponding circular plates (5); a controller (9) is installed on the end surface of the base (1), and the detection unit (7) is electrically connected to the corresponding grinding unit (8) through the controller (9); a chip removal unit (10) is installed at the bottom of the bearing seat (2), and the chip removal unit (10) is electrically connected to the controller (9); The replacement prompt unit (11) is arranged above the base (1), and the replacement prompt unit (11) is connected to the air outlet of the chip removal unit (10). The replacement prompt unit (11) is electrically connected to each detection unit (7) via a controller (9).

2. The inner hole processing device for flow meter production according to claim 1, characterized in that: Each of the detection units (7) comprises a plurality of insulating sleeves (71) detachably mounted on the side wall of the circular plate (5); the inner wall of each of the insulating sleeves (71) is slidably connected to a slide rod (72); a strip groove plate (73) is fixedly mounted on one end of the slide rod (72) away from the circular plate (5); a positioning rod (74) is rotatably arranged inside the strip groove plate (73); an end of each of the slide rods (72) away from the strip groove plate (73) on the same side is fixedly connected to an insulating block (75); a supporting spring (76) is fixedly arranged between the insulating block (75) and the inner wall of the insulating sleeve (71); a movable conductive ring (77) is fixedly sleeved on the outer wall of the insulating block (75); a resistor sleeve (78) is fixedly mounted on the inner wall of the insulating sleeve (71); and the movable conductive ring (77) is in sliding contact with the inner wall of the resistor sleeve (78).

3. The inner hole processing device for flow meter production according to claim 2, characterized in that: Each of the grinding units (8) comprises a magnetic isolation cylinder (81) fixedly inserted into the side wall of the circular plate (5); a non-magnetic rod (82) is slidably connected to the cylinder end of the magnetic isolation cylinder (81); and an arc-shaped plate (83) is fixedly connected to one end of the non-magnetic rod (82) away from the magnetic isolation cylinder (81) on the same side; a detachable grinding sand sheet (84) is installed on one end of each arc-shaped plate (83) away from the non-magnetic rod (82) on the same side; a permanent magnet (85) is fixedly installed on one end of the non-magnetic rod (82) away from the arc-shaped plate (83) on the same side; and a non-magnetic spring (86) is fixedly provided between the permanent magnet (85) and the inner wall of the magnetic isolation cylinder (81); an electromagnet (87) is fixedly installed on the inner cylinder bottom of the magnetic isolation cylinder (81); and the movable conductive ring (77) and the resistance sleeve (78) are electrically connected to the corresponding electromagnet (87) through a controller (9).

4. The inner hole processing device for flow meter production according to claim 3, characterized in that: The chip removal unit (10) comprises a collection box (101) fixedly mounted on the bottom of the support seat (2); the collection box (101) and the end surface of the support seat (2) are jointly provided with a collection hole (102); a filter screen (103) is fixedly mounted on the inner side of the collection box (101) away from the collection hole (102); a mounting box (104) is fixedly mounted on the bottom of the support seat (2); an air pump (105) is fixedly mounted inside the mounting box (104); a suction pipe (106) connected to the collection box (101) is mounted on the suction end of the air pump (105); an output pipe (107) is fixedly mounted on the output end of the air pump (105); the air pump (105) is electrically connected to a controller (9); and a plurality of air inlet holes (108) are mounted on the end surface of the top pressure plate (3).

5. The inner hole processing device for flow meter production according to claim 4, characterized in that: The replacement prompt unit (11) comprises a vent plate (111) fixedly mounted on the bottom of the collection box (101), grooves (112) being provided at both ends of the vent plate (111), and a plurality of vent holes (113) being provided at the bottoms of the two grooves (112), a circular ring (114) being fixedly mounted inside each of the vent holes (113), and a pressure switch (115) being fixedly mounted at a position of each vent hole (113) located on one side of each circular ring (114), and a wind shield (116) being fixedly mounted on the moving contact of each of the pressure switches (115), and a side wall of the wind shield (116) being aligned with a side wall of the corresponding circular ring (114). The diameter of each wind shield (116) is larger than the inner diameter of the ring (114); a plurality of normally closed electromagnetic switches (117) are fixedly mounted on the outer wall of the ventilation plate (111); an exhaust assembly (118) connected to each ventilation hole (113) is mounted on the side wall of the ventilation plate (111); the output pipe (107) is connected to each ventilation hole (113) through a groove (112) on the same side; each pressure switch (115) is electrically connected to a timing module of the controller (9); and each normally closed electromagnetic switch (117) is electrically connected to a corresponding movable conductive ring (77) and a resistor sleeve (78) through the controller (9).

6. The inner hole processing device for flow meter production according to claim 5, characterized in that: The exhaust assembly (118) comprises a plurality of exhaust pipes (12) fixedly plugged into the bottom of the ventilation plate (111), and each exhaust pipe (12) is connected to a corresponding ventilation hole (113). Each exhaust pipe (12) is arranged on a side of the same-side circular ring (114) away from the pressure switch (115). A sealing cover (13) is fixedly installed at the bottom of the ventilation plate (111), and the sealing cover (13) is connected to each exhaust pipe (12). A normally open solenoid valve (14) is installed inside each exhaust pipe (12). A normally closed solenoid valve (15) is installed inside each ventilation hole (113) at a position between the same-side exhaust pipe (12) and the same-side circular ring (114). Each normally closed solenoid switch (117) is electrically connected to the corresponding normally open solenoid valve (14) and normally closed solenoid valve (15) through a controller (9).

7. The inner hole processing device for flow meter production according to claim 6, characterized in that: An air outlet hole (16) is provided on the side wall of the sealing cover (13), and an air pressure switch (17) is fixedly mounted on the inner wall of the sealing cover (13), wherein the air pressure switch (17) is electrically connected to the controller (9).

8. The inner hole processing device for flow meter production according to claim 1, characterized in that: The driving mechanism (6) comprises a driving rod (61) rotatably arranged at the lower end of the top pressure plate (3), and each circular plate (5) is fixedly plugged with the driving rod (61). A driving motor (62) is fixedly installed on the top of the top pressure plate (3), and the output end of the driving motor (62) is transmission-connected to the driving rod (61). The driving motor (62) is electrically connected to the controller (9).

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